Troubleshooting
CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual
6-87
Installing an Authorization Key
If you replace your PPC board or add a new options, you must install a new
authorization key. Install the authorization key using the following procedure:
1. From the instrument menu bar, touch the Utilities menu, select Option
Installation, and then touch Continue.
2. Enter the new key using an attached keyboard.
3. Touch Continue.
Hard Disk Drive Maintenance
Use the same procedures to maintain the instrument hard disk drive that you use
to maintain a hard disk drive in a personal computer.
Using ScanDisk, attempt to fix the disk without destroying data on the disk. To
use ScanDisk, perform the following steps:
1. Remove the hard disk drive from the instrument.
2. Install the hard disk drive into a personal computer.
3. Power up the computer and run ScanDisk. Set Scandisk to perform a
thorough surface scan and to automatically fix errors.
H Using Microsoft Windows 2000: select My Computer\File\Proper-
ties\Tools\Error-checking
H Using Microsoft MSDOS: enter SCANDISK drive:/SURFACE
/AUTOFIX
4. If ScanDisk will not repair the disk, format the hard disk drive using the File
Utilities Format command. Format will destroy all data currently on the disk.
5. If reformatting the hard disk and reloading the software will not repair the
disk, install a new hard disk drive.
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